Excavating-machine.



H. McDERMOTT.

EXCAVATING MACHINE.

APPLICATION FILED JULY 5'1 1910. RENEWED SEPT. 4. 191a.

Patented May 18, 1915.

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Witnesses. W 4 mm H. MCDERMQTT.

EXCAVATING MACHINE.

APPLICATION FILED JULY 5, 19m. RENEWED SEPTA. 1913.

m Patented May 18, 1915.

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Patented May 18, 1915.

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FHIENRY MODERIMOTT, OF IRON .MOUNTAIN, MICHIGAN, ASSIGNOR TO MCDERMOTT MECHANICAL COMPANY, OF IRON MOUNTAIN, MICHI IGAN, A CORPORATION OF MICHIGAN.

EXGAVATING-MACHINE.

I Be it known that I, HENRY MoDERMo'r'r, a citizen of the United States, residing at Iron Mountaiin'in the county of Dickinson and State of Michigan, have invented certain new and useful Improvements in Excavating-Machines, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof. 1

The main object of this invention is to facilitate excavating, loading and removing earth, ore or the like from trenches, tunnels, etc., more particularly under ground in sub ways, mines or wherever there is insufficient I room or it isimpracticable'to use an ordinary steam shovel.

It consists in the construction, arrangement and combination of parts as hereinafter particularly described and defined in the claims. y

In the accompanying drawing like characters designate the same parts in the several figures.

Figure 1 is a vertical longitudinal section on the line 1 1, Fig.2, of a machine embodying the invention; Fig. 2 is a plan view of the same, certain parts being broken away to disclose underlying parts; Fig. 3 is a cross section on the line 3 3, Fig. -1; Fig. 4; isa vertical longitudinal section of the scoop and its supporting and guiding connections on the line 4 4, Fig. 3; Fig. 5 is a cross section on the line 5 5 Fig. 3 -Fig. 6 is a cross section on the line 6 6, Figs.

' l and 2, showing the clamping device for holding the carriage immovable on the track; Fig. 7 is a detail view of an eccentric bearing and lever for throwing the friction wheels of the transmission gearing into and out of engagement; and Fig. 8 is a horizontal section on the line 8 8, Fig. 1, showing a detail of the clamping device.

Referring more particularly to Figs. 1-

and 2, a is a carriage frame mounted on flanged truck wheels 6, adapted to run on track rails 0 for advancing the machine as the work of excavating progresses.

(Z is a platform or support pivotally mounted on the carriage frame a so 'as to swing horizontally on a vertical tubular sleeve or bearing e secured centrally to *a cross beam of said frame adjacent to the rear end thereof. Adjacent to the front end Specification of Letters Patent.

Patented May 18 19115.

Renewed September 4; 1913. Serial No. 788,160.

of the platform, a bevel gear f is mounted on the upper end of a vertical shaft 9, which is mounted in a bearing sleeve 72. secured to the platform. The lower end of the shaft 9 is provided with a pinion '2' which meshes with a curved rack j fastened to a ,cross beam at the front end of the carriage. This rack is concentric with the sleeve or bearing 6 on which the platform (2 pivots near its rear end. The lower end of the shaft 9 below the pinion i has a bearing in a curved guide it attached to the under side of the platform'parallel with the rack j and engagmg with a keeper Z fastened to the carriage frame. This guide and keeper connect the front part of the platform d with the front part of the carriage frame and securely hold them in the proper relation to each other, at the same time permitting a lateral adjustment of the platform on the pivot sleeve or'bearing e. The rear truck axle is provided with a bevel gear m meshing with a bevel pinion n on the lower end of a vertical shaft 0, which is mounted in the sleeve or hearing e and is provided at its upper end with a bevel gear 79.

On the platform (1 are mounted in line with each other, two longitudinal shafts provided at their outer ends with bevel pinions 1- meshing with the gears f and p re spectively. At their inner ends the shafts g are mounted in eccentric journal boxes, as shown in Fig. 7, and are provided adjacent thereto with'friction wheels 1?. An engine or motor a mounted on the platform or support d has a driving'shaft w arranged parallel with the shafts gand provided with friction wheels :12 opposite the friction wheels t. The eccentric boxes 8 are provided with lever arms-y as shown in Figs. 1, 2 and 7, for throwing the friction wheels 2- into and out of engagement with the opposing driving friction wheels m. The engine or motor for lengthening and shortening them and thus adjusting. the dip of the scoop, as hereinafter explained.

Upon a cross shaft 6 supported at the ends in the guides a, are mounted vertically swinged at the sides with slides 11 fitted and working as shown in Figs. 3, l and 5, in the guide ways 8 and provided on outwardly projecting studs with rollers 12 which enor flexible links 13 with arms or collars 14, mounted on the shaft 6 inside of and next to gage and work with the stationary guides z. The pivot connections betweemthe scoop or bucket 10 and the slides 11 are located above and behind the center of gravity of the scoop, so that when the latter is free its lower front edge will assume and tend to maintain its proper working position, as

shown in Figs. 1 and 4. The upper front portion of the scoop is connected by chains the members 7, or with some part or parts of the device nearer the shaft 6 than the scoop, and turning or capable of turning with the members 7.

The guides z are formed with outer or advance and inner or return ways 15 and 16 for the rollers 12, substantially concentric with the shaft 6, and are provided at the upper ends of these ways ad acent to the points where they come together, with pivoted.

switches 17 as shown in Figs. 1, 3 and 4. On the outer ends of the pivot stems of these switches are fixed arms 18, which are connected by springs 19 with the outer sides of the guides a so as to'hold the switches normally in the position shown in Figs. 1 and l.

The sprocket wheels 9 of the vertically swinging members 7 are connected as shown in Figs. 1 and 2, by link belts with sprocket wheels 20, on a shaft 21, which is mounted on the platform at parallel with the shaft 6. The shaft 2l is connected by a train of speed reducing gears 22, 23, 24 and 25, with the shaft 26 of an engine or motor-27, mounted on the platform cl, for operating the scoop or bucket 10 and the conveyer upon which said scoop or bucket dischargesj'as hereinafter explained. V

A link belt conveyer 28 runs at its'front end on sprocket wheels 29, looselymounted on the shaft 6, and at its rear end on sprocket" wheels 30 mounted on a cross shaft 31, carried by the rear upper overhanging part of the frame 4:. The link belts of the conveyer are provided as shown in Figs. 1 and 3,

with rollers which run on the upper side of the conveyer on rails 32, carried at the ends on the shafts 6 and 31. As shown in Fig. 2, the shaft '31 is provided with a loose sprocket wheel 33, which is connected by a link belt with a sprocket wheel 34: on the These members comprise radial I engine or motor shaft 26. The shaft 31 is also provided with a clutch member 35,

feathered thereon and held by a spring 36 in yielding engagement with an opposing clutch member on the hub of the sprocket wheel '33. The teeth of these clutch mem- '-bers are so formed that the conveyer shaft 31 will turn in the proper direction to move the upper side of the conveyer rearwardly to the track. Such means may consist as shown in Figs. 1, 2, 6 and 8, of opposing clamps 37, mounted on transverse bars 38, so as to embrace the heads of the track rails c. The bars 38 are carried by and movable endwise in hangers 39, fastened to the carriage frame a, and are operated by means of a radially slotted head 40, fixed on the lower end of a vertical shaft 41 and engaging with.

pins or projections l2 on said bars. Th. shaft 41 is supported and turns in a tubular post or sleeve as secured to a cross piece of the carriage frame, and is provided at its upper end with a hand lever at. This lever is provided as shown in Fig. '6, with .a spring tor 46 or quadrants fastened to the upper end of the post or sleeve as for holding the clamps in engagement with the rail heads.

In tunnels or drifts Where the formation is of suliicient stability, the machine may be provided with one or more dogs 47, pivotally mounted on the upperpartof the frame 4: adjacent to its rear end in position to engage with the top of the tunnel or drift, as shown in Fig. 1. I

.To prevent the carriage from tipping side-. wise, particularly when the scoop is swung to one side or the other from its central position, the front truck axle may be extended and provided outside of and at a distance from the rails '0, with wheels 18, as shown in Figs. 1 and 2.-

The scoop is tipped for dumping at the upper limit of its swinging movement, by stops 49 fastened to the front ends of the rails 32, or other convenient parts of the machine, in position to engage with the arms or projections on the collars 14 as they are turned upwardly intoothe position indicated by dotted lines on Fig. 1. The movement of the scoop 10 with the vertically swinging members 7 bythe motor 27, is controlledby means of a friction clutch 50 operated by a lever 51 and working with the intermediate latch 15, which engages with a notched secgear 24, which is loosely mounted on its shaft. a y

The front truck wheels 6 may be driven from the rear axle as shown in Fig. 1, by a link belt connecting a sprocket wheel thereon with a sprocket wheel 52 on the front axle.

In the operation of the machine, track rails 0 being laid, the carriage is advanced thereon till the scoop 10 is brought into working position and is then locked by the clamps 37 to the rails or braced to hold it in place, by the engagement of the dog or dogs 47 with the top of a tunnel or drift. The scoop is now swung forward and back around the shaft 6 by the operation of the engine or motor 27'under the control of the operatorthrough the train of speed reducing gears 22, 23, 2 1 and 25, the sprocket wheels 20 on the shaft 21 and their link belt connections with the swinging members 7; In the forward and upward movement of the scoop the rollers 12 traverse the.outer curved ways 15 of the guides 2, thereby holding it at theouter limit of its radial movement with the slides 11 away from the shaft 6. During this movement the scoop excavates and takes up its load, its lower advancing edgebeing held in proper working position by the chains or flexible llIlkS 13 and arms or collars 141. As the scoop approaches its extreme upper position indicated by dotted lines on Fig. 1, the rollers 12 engage with the switches 17 and turn them down over the openings into the upper ends of the guide ways 16. The openings-at the upper ends of the guide ways 16 being thus bridged by the switches 17, the rollers 12 pass over them, carrying the scoop into its dumping position, while it is held at the extreme outer limit of its radial movement away from the shaft 6. When the radial guide ways 8 are brought to an approximately vertical position nearthe upper limit of their swinging movement, the arms or projections on the collars 14: engage with the stop arms49, thereby tipping the openside of the scoop downward, as indicated by dotted lines on Fig. 1, and causing it todump its contents upon the upper side of the conveyer 28. The engine or motor 27 is now reversed by the operator and the radial guides 8 with the slides 11 being turned backward with the members .7, carry the rollers 12 against the upturned switches 17, which direct them into the inner guide ways 16. As the rollers pass into and through these inner ways, the slides 11 with the scoop 10 are drawn and held inwardly toward the shaft 6 in a path of shorter radius.

than that described by the forward and up ward movement of the scoop. As the scoop is brought back to its starting point, the

rollers 12 pass out of the lower ends of the inner ways 16 below and into position to engage with the outer ways 15,,and the scoop i is turned on its pivot connections with the on the slides 11 with the outer ends of the radial guides 8,'and by the chains or flexible links 13 and arms or collars 14;

' 'To make another cut the scoop is swung to one side or the other from its previous position by swinging the platform 03 laterally upon the sleeve or hearing e. This is accomplished by throwing the front lever y in the proper direction to carry. the associated friction wheel 25 into engagement with the opposing driving wheel at and running the engine or motor u in the required direction to accomplish the desired result, the adjustment of the platform with the scoop and other mechanism carried thereon, being effected through the connections hereinbefore described between the engine or motor u and the pinion 71 working with the rack 7' on the carriage framea.

After the excavation has been made to the of the scoop are repeated, the platform with thevscoop being swung step by step from side to side after each forward andbackward movement of the scoop with the swinging members 7. The material deposited by the scoop on the conveyer 28 is carried back-- ward by the intermittent movement of the conveyer through the connections hereinbefore described, and is discharged atth'e rein" end of the machine-into a' car 53, whichis run-on the rails 0 and'stands until loaded, below the overhanging end of the conveyer, as indicated by dotted lines on Fig. 1.

i The dip-of the scoop may be adjusted so as to cut or remove material to the desired level by means of the turn buckles 5, the scoop being thus raised or lowered with its supporting, guiding and operating connections and with the front and lower end of the conveyer 28.;

'-.F01 the purpose of making repairs or renewing parts, the shaft 6 which isfastened at the ends in the guides 2 by set screws, as shown in Figsf l and 2, may be readily withdrawn by loosening the sjct screws and thereby permit removing andreplacing any of the parts which are mounted thereon. I

Various changes in the details of construction and arrangement of parts may be made without departing from the principle and scope of the invention. .I claim:

1. In an exc ai'ating machine the combination of angularly movable members, means for swinging said members back and forth,

a scoop carried by and movable radially with respect to said membersand relatively fixed guides adapted to direct and hold said scoop in a path'of longer radius duringits advance than its return angular movement.

2. In an excavating machine the combination of pivotally mounted members having radially disposed parallel guide ways, slides mounted on said guide ways, a scoop pivotally connected at the sides with said slides,

relatively fixed guides enga ging: proj ections and movable radially toward and from the the angular movement of its carrying mem-.

, axis around which they swing, means for guiding and holding said scoop in a path of longer radius during its advance and in a path of shorter radius during its return by bers, means .vfor swingingthe scoop with its carrying members vertically, and means for swinging the same with said support horizontally.

, 4c. In an excavating machine the combina tion of a carriage, means for advancing said carriage, a horizontally swinging support mounted on said carriage, means for swinging said support, vertically swinging members pivotally mounted on said support, a

scoop carried by said members and movable radially with relation to their pivotal axis, means for swinging said members with the scoop vertically, and means forguiding and holding said scoop in a path of longer radius during its advance and in a path of shorter radius during its return movement with said vertically swinging members.

5. In an excavating machine the combination of a carriage, a conveyer mounted thereon, a bucket. movable from a position below to a position over the front end of the conveyer, guides mounted on said carriage and having advance ways adapted to direct the bucket forward, upward and backward into dumping position over the conveyer, and return ways arranged to direct the bucket in its return movement in a path behind that of its'advance movement, and means for actuating said bucket.

6. In an excavating machine the combinationof a carriage, a conveyor mounted thereon, a bucket movable from a position below to a position over the front end of the conveyer, horizontally swinging guides mount- .ed on the carriage and having advanceways adapted to direct the bucket on its working stroke forward, upward and backward into dumping position over the conveyer and return ways, arranged to direct the bucket on its return stroke in apath behind that of its working stroke, means for actuating the bucket, and meansfor swinging said guides with the bucket horizontall 7. In an excavating machine the combination of a carriage, vertically swinging members. mounted thereon, a scoop pivotally connected with said members, a flexible connection between said scoop and a part of the machine adjacent to the axis on which said members swing, and a stop arranged in the path of said flexible connection to dump the scoop near the upper limit of its movement.

8. In an excavating machine the combination of a carriage, guides mounted'on said ,carriage and having inner and outercurved ways, vertically swinging members pivotally connected with said guides adjacent to their inner sides and having radial ways, slides mounted on said radial ways and having projections arranged to engage with and traverse said curved ways, a scoop carried by said slides, means for swinging said scoop supporting members and slides back and forth and automatic switches adapted to direct the projections on the slides from the outer into the inner curved ways as the scoop swings backward. v

9-. In an excavating machine'the combination of a. carriage, vertically adjustable guides pivotally mounted on said carriage, vertically swinging members pivotally connected with and supported by said guides, radially movable slides mounted on said swinging members and engaging with said guides, a scoop carried by said slides, and suspension rods adjustably connecting said guides with a part of the machine above their pivot connections therewith for var ing the dip of the scoop.

'10. In an excavating machine the combination of a relatively fixed vertically disposed guide having outer and inner curved ways, vertically swinging members having parallel radial ways, and a scoop having connectionswith said ways movable lengthwise ofthe radial Ways as they traverse the of the radial ways as they traverse the curved guide ways, means for operating said swinging members andswitches for directg mg the scoop connections with said guides into the inner ways thereof upon the return movementiof the scoop.

12. In an excayating machine the combination of a horizontally swinging support,

vertically disposed guides mounted on said support and having outer and inner curved said swinging members and the scoop carried thereby.

13. In an excavating machine the combination of a horizontally swinging support,

vertically disposed guides mounted on said support and having outer and inner curved.

ways, vertically swinging members having parallel radial ways, a scoop having pivotal operating connections on each' side with said ways movable lengthwise of thev radial ways as they traverse the curved guide ways, and means for actuating said swinging members with the scoop. I

14;. In an excavating machine the combination of vertically disposed. parallel guides having outer and inner curved ways, vertically swinging members having parallel radial ways, a scoop having pivotal operating connections on each side with said ways movablelengthwise of the radial ways as they traverse the curved guideways, means for actuating said swinging members with the scoop, and means for directing the connections between the scoop and guides into the inner ways thereof upon the return movement of the scoop.

15. In an excavating machine the combination of a carriage, a horizontally swinging support pivotally mounted thereon, vertically disposed parallel guides mounted on said support and having outerand inner curved ways, verticallyiswinging members having parallel radial ways, a. scoop having operating connections with said guides andswinging members movable lengthwise of the radial ways as they traverse thecurved guide ways, means for actuating said swinging members with the scoop, and a conveyer mounted on said carriage in'position to receive material discharged from the scoop at the upper limit of its movement and in different positions of the horizontally swing ing support.

16. In an excavating. machine the combination'of a carriage, vertically disposed guides mounted on said carriage and having inner and outer curved ways, a cross shaft supported at the ends in said guides, centrally-with relation to said ways, vertically swinging members mounted on said shaft adjacent to said guides and having radial ways, slides mounted. on said radial ways and having projections arranged to engage with and traverse said curved ways when said swinging members are moved back and forth, and a scoop connected with said slides.

In witness whereof I hereunto afi'ix my signature in presence of two witnesses.

I HENRY MGDERMOTT.

Witnesses:

M. EMMA KNIGHT, GEORGE IRviNc'; 

